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J Org Chem. 2018 Feb 02;83(3):1160-1166. doi: 10.1021/acs.joc.7b02599. Epub 2018 Jan 16.

Asymmetric Friedel-Crafts Alkylation of Indoles with Trifluoromethyl Pyruvate Catalyzed by a Dinuclear Zinc Catalyst.

The Journal of organic chemistry

Yuan-Zhao Hua, Jun-Wei Chen, Hua Yang, Min-Can Wang

Affiliations

  1. College of Chemistry and Molecular Engineering, School of Pharmaceutical Sciences, Zhengzhou University , No. 100, Science Road, Zhengzhou, Henan 450000, P. R. China.

PMID: 29294293 DOI: 10.1021/acs.joc.7b02599

Abstract

A bimetallic cooperative catalysis model has been reported for the asymmetric Friedel-Crafts (F-C) alkylation of indoles with trifluoromethyl pyruvates using Trost's intramolecular dinuclear zinc complex as the catalyst. This dinuclear zinc catalyst was prepared in situ by reacting the chiral ligand (S,S)-L2b with 2 equiv of ZnEt

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